/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:06:50,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:06:50,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:06:50,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:06:50,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:06:50,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:06:50,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:06:50,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:06:50,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:06:50,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:06:50,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:06:50,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:06:50,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:06:50,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:06:50,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:06:50,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:06:50,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:06:50,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:06:50,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:06:50,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:06:50,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:06:50,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:06:50,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:06:50,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:06:50,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:06:50,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:06:50,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:06:50,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:06:50,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:06:50,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:06:50,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:06:50,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:06:50,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:06:50,403 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:06:50,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:06:50,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:06:50,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:06:50,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:06:50,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:06:50,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:06:50,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:06:50,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:06:50,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:06:50,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:06:50,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:06:50,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:06:50,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:50,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:06:50,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:06:50,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:06:50,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:06:50,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:06:50,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:06:50,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:06:50,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:06:50,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:06:50,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:06:50,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:06:50,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:06:50,948 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:06:50,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2021-01-06 16:06:51,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5daffc55/2539d0598ed545328913f8bdf5ad8d24/FLAGd4a2fc348 [2021-01-06 16:06:51,619 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:06:51,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c [2021-01-06 16:06:51,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5daffc55/2539d0598ed545328913f8bdf5ad8d24/FLAGd4a2fc348 [2021-01-06 16:06:51,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5daffc55/2539d0598ed545328913f8bdf5ad8d24 [2021-01-06 16:06:51,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:06:51,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:06:51,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:51,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:06:51,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:06:51,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:51" (1/1) ... [2021-01-06 16:06:51,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6cc1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:51, skipping insertion in model container [2021-01-06 16:06:51,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:51" (1/1) ... [2021-01-06 16:06:52,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:06:52,033 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~0,],word] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~ix~1,] [2021-01-06 16:06:52,272 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c[1158,1171] [2021-01-06 16:06:52,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:52,293 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~0,],base],StructAccessExpression[IdentifierExpression[~#gf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sf_u~0,],base],StructAccessExpression[IdentifierExpression[~#sf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~1,],base],StructAccessExpression[IdentifierExpression[~#gf_u~1,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~ix~1,] [2021-01-06 16:06:52,328 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1012b.c[1158,1171] [2021-01-06 16:06:52,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:52,360 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:06:52,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52 WrapperNode [2021-01-06 16:06:52,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:52,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:52,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:06:52,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:06:52,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:52,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:06:52,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:06:52,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:06:52,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... [2021-01-06 16:06:52,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:06:52,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:06:52,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:06:52,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:06:52,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:06:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:06:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:06:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:06:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:06:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:06:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:06:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:06:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:53,009 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:53,009 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-06 16:06:53,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:53 BoogieIcfgContainer [2021-01-06 16:06:53,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:53,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:53,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:53,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:53,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:06:51" (1/3) ... [2021-01-06 16:06:53,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6581ee14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:53, skipping insertion in model container [2021-01-06 16:06:53,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:52" (2/3) ... [2021-01-06 16:06:53,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6581ee14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:53, skipping insertion in model container [2021-01-06 16:06:53,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:53" (3/3) ... [2021-01-06 16:06:53,076 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2021-01-06 16:06:53,091 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:53,106 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:53,175 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:53,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:53,222 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:53,222 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:53,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:53,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:53,222 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:53,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:53,223 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-01-06 16:06:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:06:53,249 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:53,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:53,250 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2021-01-06 16:06:53,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:53,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506351871] [2021-01-06 16:06:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:06:53,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506351871] [2021-01-06 16:06:53,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:53,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:53,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147074494] [2021-01-06 16:06:53,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:53,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:53,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:53,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:53,506 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2021-01-06 16:06:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:53,525 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-01-06 16:06:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:53,526 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 16:06:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:53,536 INFO L225 Difference]: With dead ends: 34 [2021-01-06 16:06:53,536 INFO L226 Difference]: Without dead ends: 15 [2021-01-06 16:06:53,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-01-06 16:06:53,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-01-06 16:06:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-01-06 16:06:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-01-06 16:06:53,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2021-01-06 16:06:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:53,575 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-01-06 16:06:53,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:53,575 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-01-06 16:06:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:06:53,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:53,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:53,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:53,577 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:53,578 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2021-01-06 16:06:53,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:53,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957670550] [2021-01-06 16:06:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:53,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:53,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:53,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:53,729 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:53,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:53,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:53 BoogieIcfgContainer [2021-01-06 16:06:53,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:53,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:53,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:53,764 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:53,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:53" (3/4) ... [2021-01-06 16:06:53,768 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:53,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:53,770 INFO L168 Benchmark]: Toolchain (without parser) took 1784.44 ms. Allocated memory is still 163.6 MB. Free memory was 139.2 MB in the beginning and 123.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:53,771 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:53,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.23 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 128.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:53,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.91 ms. Allocated memory is still 163.6 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:53,774 INFO L168 Benchmark]: Boogie Preprocessor took 30.96 ms. Allocated memory is still 163.6 MB. Free memory was 127.4 MB in the beginning and 126.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:53,775 INFO L168 Benchmark]: RCFGBuilder took 580.67 ms. Allocated memory is still 163.6 MB. Free memory was 126.0 MB in the beginning and 111.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:53,776 INFO L168 Benchmark]: TraceAbstraction took 742.86 ms. Allocated memory is still 163.6 MB. Free memory was 110.7 MB in the beginning and 124.0 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:53,777 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 163.6 MB. Free memory was 124.0 MB in the beginning and 123.5 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:53,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 372.23 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 128.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.91 ms. Allocated memory is still 163.6 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.96 ms. Allocated memory is still 163.6 MB. Free memory was 127.4 MB in the beginning and 126.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 580.67 ms. Allocated memory is still 163.6 MB. Free memory was 126.0 MB in the beginning and 111.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 742.86 ms. Allocated memory is still 163.6 MB. Free memory was 110.7 MB in the beginning and 124.0 MB in the end (delta: -13.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 4.61 ms. Allocated memory is still 163.6 MB. Free memory was 124.0 MB in the beginning and 123.5 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 48, overapproximation of bitwiseAnd at line 36. Possible FailurePath: [L48] float x = -1.0f / 0.0f; [L14] __uint32_t ix; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L21] ieee_float_shape_type sf_u; [L22] sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] (x) = sf_u.value [L25] return x; [L49] float res = fabs_float(x); [L30] __int32_t ix; [L32] ieee_float_shape_type gf_u; [L33] gf_u.value = (x) [L34] EXPR gf_u.word [L34] (ix) = gf_u.word [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); [L52] COND TRUE !isinf_float(res) [L53] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...